Hopefully you did your research and already know this, but just to be sure....make sure you are taking extra potassium with that clen when you ramp it up towards 100mcg, otherwise....well, it will NOT feel very good.

Clenbuterol is a beta-2 agonist and is used in many countries as a broncodilator
for the treatment of asthma. Because of it's long half life, clenbuterol is not
FDA approved for medical use. It is a central nervous system stimulant and acts
like adrenaline. It shares many of the same side effects as other CNS stimulants
like ephedrine. Contrary to popular belief, Clenbuterol has a half life of 35
hours and not 48 hours.

It also increases metabolic rate and core temperature, DEFINITLEY a stimulant. I would stay away from high doses of caffeine while on clen, but that's just my opinion, clen isn't approved for use by the FDA so.....

The big thing (in my opinion) to take into consideration is the timing of the dosing. If you dose clen upon rising and work out in the afternoon or evening, you still have to keep in mind that you have clen in your system, but it won't drive you nuts with hand shakes and jitters and such.

Psalm 34:10 - "The lions may grow weak and hungry, but those who seek the Lord lack no good thing."

Because if so, well, you're way off... 2 weeks on, 2 weeks off, 1 week off with benadryl won't be enough for your receptors to have a break. Hell, it won't even clear your system completely until day 3, which means you're barely taking a 4 day break. And benadryl helping out the receptors is but a myth.